STM32 MCUs Products

I2C driver always busy after first use

I'm using the HAL_I2C_Master_Transmit_DMA driver on an STM32L412. I am transmitting 8 bytes of data to an external 4 channel I2C DAC - I have only one device on the bus. The first use of the driver works fine as confirmed by using an oscilloscope on ...

In addition to my previous question: it was easy to prepare folders etc. before the training starts. This helps to follow the training if you have only one monitor!

Stop mode 2 with external SPI peripheral

Hello ST community,I have QSPI flash and an environment sensor based on SPI with stm32l496rg development board.If I put controller in stop mode 2 without sensor and flash current consumption of system is 3uA.If I connect flash and sensor then in stop...

We are designing circuit for IOT NODE using ST 32L4. We would like know whether we get technical support from Application Engineers for Validating our design

Please inform the procedure to get technical support from you

Is there any difference between usart6 and usart 1? Usart6 gives me problems with same configuration as usart1, which is working fine.

Hello community,I have a problem with using usart6, although usart1 is working fine.My setup: STM32F439, usarts connected to a dual ftdi chip, so I have two com ports on the pc to choose of, which represent usart 1 on usart 6 resp.Also direct usb con...

About the I2C of STM32F030C8; from the datasheet, PIN 42/43, 45/46, They all could be I2C1; pin 21/22 or 35/36, which is I2C2?

please review the datasheet,--4 Pinouts and pin descriptions-- from the datasheet, both PIN 42/43 and 45/46 could be I2C1; both PIN 21/22 and 35/36 could be I2C2; which is right exactly?

Microarchitectures of STM32F4 devices?

Are there pictures of microarchitectures of STM32F4 series devices? Something like this picture of 56301 DSP.http://strategysanity.com/s-images/dieDSP-Motorola56301.JPGWe'd like to find out what killed some processors on our boards. The dead processo...

Bypassing signal from ADC to GPIOs for external DAC

Hi! I'm working in a bypass analog signal to external DAC and I did this isolating and checking (if H or L) each bit from adc buffer to load each 12 GPIOs. I'm looking for other soluton to do this. Can someone suggest other solution?

Extra clock pulses with slow SPI master.

I wonder if there is some known issue?With logic analyzer I confirmed that I had extra clock pulses in the SPI after the data was read.The chip is STM32F427@180MHz.PCLK2 is 90 MHzSPI4 (master) is used with 16 bits and with prescaler 64, half duplex, ...